1. Institute for General Practice, Johannes Keppler University Linz, Huemerstrasse 3-5, 4020 Linz, Austria
2. Institute of Palliative Medicine and Care, Medical Faculty Maribor, University of Maribor, Maribor, Slovenia
3. Last Aid Research Group International (LARGI), Germany
4. Last Aid Research Group International (LARGI); Department of Anesthesiology, Intensive Care, Palliative Medicine and Pain Therapy, HELIOS Klinikum Schleswig, Schleswig, Germany